1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Aleonysh [2.5K]
3 years ago
8

(50 points) A diameter of a circle has endpoints P(-10, -2) and Q(4,6)

Mathematics
1 answer:
Gala2k [10]3 years ago
8 0

Answer:

Step-by-step explanation:

The center of the circle is the midpoint of the two end points of the diameter.

Formula

Center = (x2 + x1)/2 , (y2 + y1)/2

Givens

x2 = 4

x1 = - 10

y2 = 6

y1 = - 2

Solution

Center = (4 - 10)/2, (6 - 2)/2

Center = -6/2 , 4/2

Center = - 3 , 2

So far what you have is

(x+3)^2 + (y - 2)^2 = r^2

Now you have to find the radius.

You can use either of the endpoints to find the radius.

find the distance from (4,6) to (-3,2)

r^2 = ( (x2 - x1)^2 + (y2 - y1)^2 )

x2 = 4

x1 = -3

y2 = 6

y1 = 2

r^2 = ( (4 - -3)^2 + (6 - 2)^2 )

r^2 = ( (7)^2 + 4^2)

r^2 = ( 49 + 16)

r^2 = 65

Ultimate formula is

(x+3)^2 + (y - 2)^2 = 65

The radius is √65 = 8.06

You might be interested in
I WILL MAKe yoU BRAINLIEST I NEED HELP ASAP!!!
nata0808 [166]

Answer: -12 yard lost

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
The weekly incomes of a large group of executives are normally distributed with a mean of $2,000 and a standard deviation of $10
8_murik_8 [283]

Answer:

The z-score for an income of $2,100 is 1.

Step-by-step explanation:

If X \sim N (µ, σ²), then  Z=\frac{x-\mu}{\sigma}, is a standard normal variate with mean, E (Z) = 0 and Var (Z) = 1. That is, Z \sim N (0, 1).

The distribution of these z-variate is known as the standard normal distribution.

Given:

µ = $2,000

σ = $100

<em>x</em> = $2,100

Compute the <em>z</em>-score for the raw score <em>x</em> = 2100 as follows:

Z=\frac{x-\mu}{\sigma}=\frac{2100-2000}{100}=\frac{100}{100}=1

Thus, the z-score for an income of $2,100 is 1.

4 0
3 years ago
Which fraction is modeled by the number line?<br> A. 2/3<br> B. 2/2<br> C. 3/4<br> D. 1/3
KonstantinChe [14]

Answer:

C

Step-by-step explanation:

I think that would be c not completely sure but I hope it helps

7 0
3 years ago
Read 2 more answers
What the correct answer do not want the wrong answer please
Crank

Answer:

388.5yd²

Step-by-step explanation:

We have Triangle TUV

In the question, we are given already

Angle U = 32°

Angle T = 38°

Angle V = ???

Side t = 31yd

Side u = ?

Side v = ?

Area of the triangle= ?

Step 1

We find the third angle = Angle V

Sum of angles in a triangle = 180°

Third angle = Angle V = 180° - (32 + 38)°

= 180° - 70°

Angle V = 110°

Step 2

Find the sides u and v

We find these sides using the sine rule

Sine rule or Rule of Sines =

a/ sin A = b/ Sin B

Hence for triangle TUV

t/ sin T = u/ sin U = v/ sin V

We have the following values

Angle T = 38°

Angle U = 32°

Angle V = 110°

We are given side t = 31y

Finding side u

u/ sin U= t/ sin T

u/sin 32 = 31/sin 38

Cross Multiply

sin 32 × 31 = u × sin 38

u = sin 32 × 31/sin 38

u = 26.68268yd

u = 26.68yd

Finding side x

v / sin V= t/ sin T

v/ sin 110 = 31/sin 38

Cross Multiply

sin 110 × 31 = v × sin 38

v = sin 110 × 31/sin 38

v = 47.31573yd

v = 47.32yd

To find the area of triangle TUV

We use heron formula

= √s(s - t) (s - u) (s - v)

Where S = t + u + v/ 2

s = (31 + 26.68 + 47.32)/2

s = 52.5

Area of the triangle = √52.5× (52.5 - 31) × (52.5 - 26.68 ) × (52.5 - 47.32)

Area of the triangle = √150967.6032

Area of the triangle = 388.5454973359yd²

Approximately to the nearest tenth =388.5yd²

5 0
3 years ago
Select the correct answer. Why is it important to budget some money for entertainment? A. It is easier to stick to a budget if y
IRISSAK [1]

Answer:

A

Step-by-step explanation:

well some people like to go on a budget and others prefer not to because they rather spend their money money on wants rather than needs so I really hope this helps.

5 0
3 years ago
Other questions:
  • Simplify 10 – 3x – 13 + 5x<br><br> A. 2x – 3<br><br> B. 1<br><br> C. 3 – 3x<br><br> D. 3 – 2x
    12·2 answers
  • 3+4(x+5)=31 show steps
    6·1 answer
  • Which table represents a linear function ?
    14·1 answer
  • Need answers to 8 and 9 fam help a girl out plz
    9·1 answer
  • Determine whether the polynomial is a difference of squares and if it is, factor it.
    5·1 answer
  • In the first equation in the system of equations, y represents the money collected from selling sweatshirts. In the second equat
    10·2 answers
  • What is the answer 2+2*3+2*2+4=​
    9·2 answers
  • Express this number in standard form<br> 5.301 x 107 = ?
    12·1 answer
  • A family eats at a restaurant. The bill is $56.75. They are pleased with service so they leave 22% tip. What is their total afte
    15·1 answer
  • Can someone help me out here? Not sure how to solve this problem or where to start either?
    10·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!